BackendDatabasesHigh signal
Event Sourcing
Storing every change as an immutable event and deriving current state by replaying them, instead of overwriting rows in place.
Think of it like
A bank statement rather than just a balance: the number is recoverable, and so is how it got there.
Junior or senior?
Genuinely advanced and frequently regretted.
Senior sounds like
Talks about schema evolution and replay cost — the parts that hurt years in.
Ask them
“What became painful about event sourcing once the system had been running a while?”